Cavallari Crashes Conrad's Celebration

2/2/2008 10:15 AM PST

Cavallari Crashes Conrad's Celebration

L.C.'s birthday bash was likely ruined when her on screen real life nemesis, Kristin Cavallari, showed up at Goa nightclub where she was partying with Lo -- the drama!


Also in L.A.: "Fantastic Four" hottie Chris Evans showed his New England pride, Pierce Brosnan exclaimed his love of noodles, and DJ Qualls -- who gave his pick for president ... sorta.

In NYC, everyone flocked to a Marc Jacobs party -- including Helena Christensen, Anne Hathaway, Tommy Hilfiger and Allison Janney.